The 30-year-old model is teaming up with the American label to create 20 pieces - including denim dresses, T-Shirts and jeans - for their new and upcoming collection, Alexa Chung for AG, reported Contactmusic.
"The collection is inherently the missing pieces of my dream denim wardrobe, which, as ever, is predominantly inspired by a late Sixties, early Seventies aesthetic," she said.
The British star, who also worked with US retailer Madewell in 2011, paid a visit to the Goldschmied factory in California recently and spent the duration of her trip searching through shops in the area as part of her research for the collection.